1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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24
25 #ifndef SHARE_JVMCI_JVMCI_GLOBALS_HPP
26 #define SHARE_JVMCI_JVMCI_GLOBALS_HPP
27
28 #include "runtime/globals_shared.hpp"
29 #include "utilities/vmEnums.hpp"
30
31 class fileStream;
32
33 //
34 // Declare all global flags used by the JVMCI compiler. Only flags that need
35 // to be accessible to the JVMCI C++ code should be defined here.
36 //
37 #define JVMCI_FLAGS(develop, \
38 develop_pd, \
39 product, \
40 product_pd, \
41 notproduct, \
42 range, \
43 constraint) \
44 \
45 product(bool, EnableJVMCI, false, EXPERIMENTAL, \
46 "Enable JVMCI") \
47 \
48 product(bool, EnableJVMCIProduct, false, EXPERIMENTAL, \
49 "Allow JVMCI to be used in product mode. This alters a subset of "\
50 "JVMCI flags to be non-experimental, defaults UseJVMCICompiler " \
51 "and EnableJVMCI to true and defaults UseJVMCINativeLibrary " \
52 "to true if a JVMCI native library is available.") \
53 \
54 product(bool, UseJVMCICompiler, false, EXPERIMENTAL, \
55 "Use JVMCI as the default compiler. Defaults to true if " \
56 "EnableJVMCIProduct is true.") \
57 \
58 product(bool, JVMCIPrintProperties, false, EXPERIMENTAL, \
59 "Prints properties used by the JVMCI compiler and exits") \
60 \
61 product(bool, BootstrapJVMCI, false, EXPERIMENTAL, \
62 "Bootstrap JVMCI before running Java main method. This " \
63 "initializes the compile queue with a small set of methods " \
64 "and processes the queue until it is empty. Combining this with " \
65 "-XX:-TieredCompilation makes JVMCI compile more of itself.") \
66 \
67 product(bool, EagerJVMCI, false, EXPERIMENTAL, \
68 "Force eager JVMCI initialization") \
69 \
70 product(bool, PrintBootstrap, true, EXPERIMENTAL, \
71 "Print JVMCI bootstrap progress and summary") \
72 \
73 product(intx, JVMCIThreads, 1, EXPERIMENTAL, \
74 "Force number of JVMCI compiler threads to use. Ignored if " \
75 "UseJVMCICompiler is false.") \
76 range(1, max_jint) \
77 \
78 product(intx, JVMCIHostThreads, 1, EXPERIMENTAL, \
79 "Force number of C1 compiler threads. Ignored if " \
80 "UseJVMCICompiler is false.") \
81 range(1, max_jint) \
82 \
83 NOT_COMPILER2(product(intx, MaxVectorSize, 64, \
84 "Max vector size in bytes, " \
85 "actual size could be less depending on elements type") \
86 range(0, max_jint)) \
87 \
88 NOT_COMPILER2(product(bool, ReduceInitialCardMarks, true, \
89 "Defer write barriers of young objects")) \
90 \
91 product(intx, JVMCIEventLogLevel, 1, EXPERIMENTAL, \
92 "Event log level for JVMCI") \
93 range(0, 4) \
94 \
95 product(intx, JVMCITraceLevel, 0, EXPERIMENTAL, \
96 "Trace level for JVMCI") \
97 range(0, 4) \
98 \
99 product(intx, JVMCICounterSize, 0, EXPERIMENTAL, \
100 "Reserved size for benchmark counters") \
101 range(0, 1000000) \
102 \
103 product(bool, JVMCICountersExcludeCompiler, true, EXPERIMENTAL, \
104 "Exclude JVMCI compiler threads from benchmark counters") \
105 \
106 product(intx, JVMCINMethodSizeLimit, (80*K)*wordSize, EXPERIMENTAL, \
107 "Maximum size of a compiled method.") \
108 range(0, max_jint) \
109 \
110 product(ccstr, JVMCILibPath, NULL, EXPERIMENTAL, \
111 "LD path for loading the JVMCI shared library") \
112 \
113 product(ccstr, JVMCILibDumpJNIConfig, NULL, EXPERIMENTAL, \
114 "Dumps to the given file a description of the classes, fields " \
115 "and methods the JVMCI shared library must provide") \
116 \
117 product(bool, UseJVMCINativeLibrary, false, EXPERIMENTAL, \
118 "Execute JVMCI Java code from a shared library " \
119 "instead of loading it from class files and executing it " \
120 "on the HotSpot heap. Defaults to true if EnableJVMCIProduct is " \
121 "true and a JVMCI native library is available.") \
122 \
123 NOT_COMPILER2(product(bool, UseMultiplyToLenIntrinsic, false, DIAGNOSTIC, \
124 "Enables intrinsification of BigInteger.multiplyToLen()")) \
125 \
126 NOT_COMPILER2(product(bool, UseSquareToLenIntrinsic, false, DIAGNOSTIC, \
127 "Enables intrinsification of BigInteger.squareToLen()")) \
128 \
129 NOT_COMPILER2(product(bool, UseMulAddIntrinsic, false, DIAGNOSTIC, \
130 "Enables intrinsification of BigInteger.mulAdd()")) \
131 \
132 NOT_COMPILER2(product(bool, UseMontgomeryMultiplyIntrinsic, false, DIAGNOSTIC, \
133 "Enables intrinsification of BigInteger.montgomeryMultiply()")) \
134 \
135 NOT_COMPILER2(product(bool, UseMontgomerySquareIntrinsic, false, DIAGNOSTIC, \
136 "Enables intrinsification of BigInteger.montgomerySquare()"))
137
138 // end of JVMCI_FLAGS
139
140 DECLARE_FLAGS(JVMCI_FLAGS)
141
142 // The base name for the shared library containing the JVMCI based compiler
143 #define JVMCI_SHARED_LIBRARY_NAME "jvmcicompiler"
144
145 class JVMCIGlobals {
146 private:
147 static fileStream* _jni_config_file;
148 public:
149
150 // Returns true if jvmci flags are consistent. If not consistent,
151 // an error message describing the inconsistency is printed before
152 // returning false.
153 static bool check_jvmci_flags_are_consistent();
154
155 // Convert JVMCI experimental flags to product
156 static bool enable_jvmci_product_mode(JVMFlagOrigin);
157
158 // Returns true iff the GC fully supports JVMCI.
159 static bool gc_supports_jvmci();
160
161 // Check and turn off EnableJVMCI if selected GC does not support JVMCI.
162 static void check_jvmci_supported_gc();
163
164 static fileStream* get_jni_config_file() { return _jni_config_file; }
165 };
166 #endif // SHARE_JVMCI_JVMCI_GLOBALS_HPP